In Borgarfjörður Eystrim , the puffin nesting grounds are covered with netting, so that the puffins don’t ruin their home by being too, well, puffinish.

At Raudanes, they are free to do as they wish. As you can see below, the result is quite different.

There are fewer puffins, but they are wilder. Ain’t that the thing, eh.